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程式設計工藝大師
紅綠燈
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
int c = 0, f = 0;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
c = c + 1;
f = c % 3;
button1.Text =f. ToString();
}
private void timer1_Tick(object sender, EventArgs e)
{
c = c + 1;
f = c % 3;
button1.Text = f.ToString();
button2.Text = f.ToString();
button3.Text = f.ToString();
if (f == 0)
{
button1.BackColor = System.Drawing.Color.FromName("Red");
}
else
{
button1.BackColor = System.Drawing.Color.FromName("White");
}
if (f == 1)
{
button2.BackColor = System.Drawing.Color.FromName("Green");
}
else
{
button2.BackColor = System.Drawing.Color.FromName("White");
}
if (f == 2)
{
button3.BackColor = System.Drawing.Color.FromName("Yellow");
}
else
{
button3.BackColor = System.Drawing.Color.FromName("White");
}
}
}
}
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